2024-03-29T08:00:04Z
http://bc.umcs.pl/oai-pmh-repository.xml
oai:bc.umcs.pl:5196
2021-05-20T11:08:59Z
dLibraDigitalLibrary:CulturalHeritage dLibraDigitalLibrary:ScienceandEducation dLibraDigitalLibrary:CulturalHeritage:Journals dLibraDigitalLibrary dLibraDigitalLibrary:ScienceandEducation:ScientificPapers